Water-heater.



E. W. SAWTELLE.

WATER HEATER APPLIUATLON FILED MAR, 10, 1909.

950,516, Patented Mar.1,1910.

INVENTOR UNITED STATES EUGENE WILLIAM SAW'I'ELLE,

PA'rENT OFFICE.

OF SACRAMENTO. CALIFORNIA.

Patented Mar. 1, 1910.

WATER-HEATER.

950,516, Specification of Letters Yateat.

Appucauoa fled lurch 10, 1909. Serial no. 452,627.

To all whom it may ermcem:

Be it known that I, Eve-am: Woman SAW'I'ELLE, a citizen of the UnitedStates, residing at Sacramento, in the county of Sacramento and b'tateof California, have invented certain new and useful Improvements inWater-Heaters, of which the fol lowing is a. specification.

My invention relates to iniprovcnwnts in water heaters and especially tothat class used for heating a supply of water will become apparent, areto provide a heater from which the settlings or water charged withsediment may readily be removed not only from the coils; to provide anarrangement ot heating coils that will supply the maximum amount of hotwater wit penditure of gas, and to provide certain novel arrangements ofpipes and conncc-g lions as will be further explained.

A practical embodiment of my invention is represented in theaccompanying draw ings forming which similar figures of referenceindicate oorresl'mnding parts throughout.

The specification is in such elca r and concise terms that anyonefamiliar with the art to which this invention applies may readilyunderstand itand be able to construct the same, reference being also hadto the drawings.

Figure 1 is a vertical sectional view showing certain parts in sideelevation of the water heater forming: the basis of my invention. Fig. 2is a sectional view taken at the dotted line o--o of and the outlet 19.

In Fig. 1, 1' is a stand for so )porting the boiler; 1 is the outershell of tn: boiler; 2 is an open ended central tube or llue concentricwith the shell, the upper end of which terminates in the hood 3 and thelower end lorminutus in the frusto-rouh-ul 1 bottom 4; 5 1; is a double5; )iral water brutiug coil vertically arranger within the line 2 theterminals of said roll connecting with \ia o n.

8 is a gas gas or fumes.

I V V lhe water supply us mlpullod nuo the look through the cock llsuuutml nour the lower part of the took; about on n level for dolnesticpurposes by means oi gas; and the 1 objects of my invention, amongothers which the tank but also from i the minimum ex- 1 part of thisspecification, in

Fig. l to show the T 15' burner lnculod lwlow the mlla and 10 18 uchnnnvy for uouwymg oll any f with this and at any point in theperiphery of the tank but preferably opposite to it, is a pipeconnection 12 which conducts the water near the lower part of the boilerto the lower end of the coil 5 through the pipe 13 and 13' and theirauxiliary connections. At the lowest point on the pipes 13 and i3 is adrain cock 1? and between this cock I and the connection 1:! is astopcock 18. g When it is desired to clear the roil of any sediment, thecock 18 is shut on and the rock 17 opened, it being understood that thel supply-cock 11 is also open. l At the lowest practical point in thetank 5 is placed a rock 15 supplied from the main )0 16 as indicated,and within the tank and connected to said cock by suitable fittings is aT 15 so placed that when the rock 15 is opened (the cock 11 now bein 4closed) the stream of water will be divide 1 port going around thebottom of the tank one way and part the other see Fig. 2. it i isobvious that when the draiwcock 19 is opened, any deposit or settlin swhich may 1 have collected ill the pocket fin'med by the union of thesides of the tank and the fru'stoconical bottom will be washed out. Whenit is desired to clear the bottom of the boiler. the cook 11 should bechm-d, and the two rocks 15 and It) opened. T he supply rock i 11 isplaced above the cook 15 so that as the i fresh supply of water isinjected into the l tank itwill not agitate any scttlings or depositstherein. By this arrangement of drains it is possible to keei the tankand coils free from settlings which have provcu so disastrous in certainparts of the country i to water heaters of this class.

Near the upper end of the tank is a sleeve 20 connecting the outer shellof the boiler with the flue 2.; this sleeve is to form a pansage-wny forthe introduction of the pipe 21 ronnechn the upper discharge end of theI ends 5 with the pipe 2'3. The outer end of l this sleeve is plugged bythe bushing "20'. In the lower part of this pipe 3:2 is placed a T .23with suitable connection to the tank. and the upper end of 2.2 isconnected by another T 22-ito the upper bond 3 of the tank; and the hotwater delivery pipe 25 is connected to this T, all as ilulicutod.

The operation will then he as follows: Water passing through the pipes13 and 13' l (the cook 18 being open) will outer the lower i end ofjhocoil rand Iii-come instantly healed, and ruuug, will pass into thegeneral oil" Ill) culation of the tank through the Ts 23 and 24 andtheir connecting pipes 21 and 22, i tending to heat the entire contentsof the 5 tank quickly. When the hot water delivery pipe 25 is opened bymeans of a valve connected with the hot water delivery service, L thehot water in the coils will be delivered first, passing directly throughthe pipes 21, 5 22am 25 and afterward the water in the j upper end ofthe tank will pass out through the Ts 24 and 23. With this simplearrangement of ipes, it is possible to obtain a quantity of wt waterquickly or a larger su ply in a short period of time. But in or or thatthe proper circulation of water may be carried on in the tank and coils,it is necessa that they be kept free from settlings w ich form when thewater supply is char ed with considerable sediment. If the tan is not inconstant use, sediment will collect in the coils and bottom of tank, andwhen heat is ap lied will cause the sediment to harden and t us obstructthe proper passage of water. Should this continue, the pipes may becomecompletely closed, thus causing considerable damage; this condition isovercome by the system of drain cocks and valves hereinbefore fullyexplained.

While I have shown and described a frusto-conical bottom boiler, I donot wish I to claim such broadly, as the arran enient I have shown canbe used equallv we 1 with a flat bottom boiler when the distance betweenthe shell and the inner flue is not very great. The drawings show adouble spiral water coil; this ma be a single coil but I prefer to usethe cable coil as it ex ses E a greater surface to the action oftheteat. It is, therefore, to be noted that various} outside near its lowerend; a

mentioned flue; a coil vertically disposed within said fine; a pipeleading from the bottom of said coil around the lower part of the tankand connected to the tank on the ipe leadin trom the up 1' end of the aorcsuid coil through the me 'embeforc mentioned sleeve; :1 T connectingthis last mentioned pipe to the tank on the outside just above thesleeve; a continuation of this same pipe and a second T connecting thesame to the head of the tank; a hot-water delive pipe connected to thislast mentioned a cold-water supply 1pc connected to the tank at twopoints, t e one above the other, near the bottom thereof; and a gasburner located below the water coil.

2. In a water heater suitably su ported and having a drain-cock 19, thecom ination of a tank having an upper head and a frustocomcal bottom andan open ended inner flue concentrically fixed therein, one endterminoting in the upper head and the other in the frusto-conicalbottom, and having a sleeve connecting the outer shell of said tank nearits upper end with the above mentloned line; a coil vertically dis usedwithin said flue; a pipe leading from t 1e bottom of i said coil aroundthe lower part of the tank and connected to the tank on the outside nearits lower end, said pi being provided with a drain cook 17 an a stopcock 18; a pipe leading from the u per end of the aforesaid coil throughthe liercinbefore mentioned sleeve; :1 T eonnectin this last mentionedipe to the tank on he outside just above t e sleeve; a continuation ofthis same pipe and a second T connecting the same to the head of thetank; a hot-water changes may be made in the form, proportion and minordetails of construction without in any way departing from the princi leor sacrificing any of the advantages of t \is invention.

I am aware that water heaters having heatin coils is not new, but

but I claim as new and desire by Lettcrs Patent to secure, is-

1. In a water-heater suitably supported, the combination of a tankhaving an upper I head and a frusto-conical bottom and an open i endedinner flue concentrically fixed therein, one end terminating in theupper head and the other in the frusto'conicul bottom. and i having-asleeve connecting the outer shell of said tank near its upper end withthe above i i d eliveryr pipe connected to this last menhoned acold-water supply pipe 16 connectcd to said tank at two points, the one2 above the other, near the bottom thereof, the upper connection beingprovided with a stopcook 11 and the lower connection being pro- 1 videdWllll a stop-cock 15 and terminating within the tank in a T 15'; and agas burner located below the water coil.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

Witnesses:

J. C. Cnnrnn'ruu, E. A. S'IICKNEY.

